1886.] ENTOMOSTRACA FROM SOUTH AUSTRALIA. 91 



Chlamydotheca australis, n. sp. (Plate IX. figs. 4-8.) 



Shell, seen from the side, subovate, greatest height equal to rather 

 more than half the length, and situated in the middle, anterior 

 extremity rounded, produced at the inferior angle so as to form a 

 ventral beak, posterior extremity narrower, rounded, dorsal margin 

 boldly arched, ventral slightly sinuated in the middle, more deeply 

 in front, behind the beak ; seen from above, the outline is ovate, 

 twice as long as broad, anterior extremity forming a large, broad, 

 obtusely-pointed, and twisted prominence, posterior slightly narrowed 

 and produced, but rounded off. The valves are unequal, the left 

 being the larger, overlapping on the ventral, and less distinctly on 

 the dorsal margin. The outline of the right valve is more evenly 

 rounded than that of the left, presenting no ventral beak nor sinua- 

 tion, nor are the margins, either ventral or dorsal, so much incurved ; 

 the inner aspect of the valves shows shelving flanges both before and 

 behind, and in that of the left side there is a curious twisted ridge 

 separating the anterior beaked portion from the body of the shell. 

 The substance of the shell is rather thick ; surface closely marked 

 vyith small circular impressions ; colour fuscous. Length -Jg of an 

 inch. The specimens are all empty shells, so that the structure of 

 the soft parts is as yet unknown. 



Penola {Prof. B. Tate). 



Genus Cypridopsis, Brady. 



1. Cypridopsis minna (King). (Plate X. figs. 1-3.) 



Oypris minna, King, 1855, Pap. Proc. R. Soc. Van Diemen's Land, 

 vol. iii. pt. i. p. 64, pi. x. b. 



Shell very tumid; width and height about equal, length about 

 one fourth greater. Seen from the side, subcircular, highest in the 

 middle, extremities broadly rounded, dorsal margin excessively 

 arched, ventral nearly straight in the middle ; seen from above very 

 broadly ovate, obtusely pointed in front, the hinder part forming 

 almost a complete circle ; end view subcircular, obscurely pointed 

 above, slightly keeled and emarginate below. Surface smooth, beset 

 with small impressed circular puncta ; colour olivaceous, clouded 

 irregularly with darker patches. Anterior margins of the valves 

 slightly orenulated. Length ^ of an inch. 



Bab. Condong River, Australia {Mr. T. Steel). " Ponds, every- 

 where " {Rev. a. L. King). 



2. Cypridopsis funebris, n. sp. (Plate VIIL figs. 7-9.) 

 Shell, seen from the side, subtriangular ; greatest height a little in 



front of the middle and equal to nearly two thirds of the length ; 

 extremities rounded, the anterior wide, posterior narrower and not so 

 well rounded, dorsal margin elevated and almost gibbous near the 

 middle, thence sloping almost in a straight hne backwards, and with 

 a gentle curve towards the front, ventral almost straight ; seen from 

 above, ovate, widest in the middle, width equal to two thirds of the 



